Add Show/Hide Password Toggle & Strong Validation

[dimpal-yadav]

Description:
Currently, the Sign Up form in the SafeVoice project has a password input field, but it lacks the following features:
Show/Hide password toggle – Users should be able to toggle the visibility of the password while typing.
Password validation rules – The password should meet the following criteria:

Minimum 8 characters
At least one uppercase letter
At least one lowercase letter
At least one number
At least one special character (symbol)
User feedback – The form should provide real-time feedback if the password does not meet the above criteria.

Expected Outcome:
Password input field with a toggle icon to show/hide the password.
Validation messages displayed as the user types the password.
Form submission should be prevented if password does not meet the criteria.

Steps to Reproduce:
Open the Sign Up page.
Enter a password in the password field.
Currently, password visibility cannot be toggled and invalid passwords can be submitted.

[github-actions]

Thank you for raising this issue!

We'll review it as soon as possible. We truly appreciate your contributions! ✨

Meanwhile make sure you've visited the README.md, CONTRIBUTING.md, and CODE_OF_CONDUCT.md before creating a PR for this. Also, please do NOT create a PR until this issue has been assigned to you. 😊

[eccentriccoder01]

@dimpal-yadav The "Validation messages displayed as the user types the password" point you mentioned in the issue quite actually exists in the app already, as you can see yourself in the site... But for other modifications, I'm assigning this to you... All the best!